Waterproof connector with cover having tubular portion

Abstract

The invention provides a waterproof connector in which a seal is maintained around a bolt without having to increase the number of components. A bolt 39 is passed through a through hole 36 of a bolt attachment member 35, this bolt 39 being passed from a countersunk hole 46 of a grommet 40 attached so as to cover a posterior face of a female housing 30. A nut 26 of a male housing 20 is fastened to this bolt 39, this fastening the two housings 20 and 30 together. A circular sealing member 50 is formed in a manner whereby it adjoins a central hole 47 of a base face 46A of the countersunk hole 46, a shaft 39A of the bolt 39 passing through this sealing member 50 in a manner whereby it fits tightly therewith. The sealing member 50 fits into a housing hole 53 of the bolt attachment member 35. If electric wires are pulled so as to cause a tubular member 45 to change shape, the base face 46A of the countersunk hole 46 may receive a pulling force which causes it to change shape and move outwards relative to the direction of its diameter. However, the adjoining sealing member 50 has been fitted into the housing hole 53, thus preventing the sealing member 50 from changing shape. Consequently, a seal is reliably maintained around the shaft 39A of the bolt 39.

Description

The present invention relates to the improvement of a waterproof connector that is covered by a grommet and fixed by a bolt to a corresponding housing.BACKGROUND TO THE INVENTIONOne example of this type of waterproof connector is a connector attached to a panel, as described in JP 6-72177. As shown in FIG. 5 of this specification, this waterproof connector has a male housing 2 attached, in a waiting state, to a panel 1 via an attachment hole 1A of this panel 1. A waterproof female housing 3 is fitted to this male housing 2. A posterior face of the female housing 3 is covered by a grommet 4 which makes contact with hole edges of the attachment hole 1A, thereby sealing the attachment hole 1A. Furthermore, the grommet 4 is provided with a tubular member 4A that leads a bundle of electric wires in a specified direction. The grommet 4 is passed through the female housing 3, then a bolt 5 is attached thereto. A nut 6 attached to the male housing 2 is screwed to the bolt 5, thus fastening ...

AI Technical Summary

Benefits of technology

The solution ensures a reliable seal around the bolt without additional components, reducing production costs and maintaining the seal even under pulling forces on the wires, enhancing the connector's sealing performance.

Problems solved by technology

A space may appear between the grommet 4 and the inserted portion 7, thus damaging the seal around the bolt 5.

Since the conventional connector requires an extra component, namely, the cover 8, the number of components increases, and production costs increase commensurately.

Images